Folding-plate for paper-folding machines.



R. E. KIMBALL. FOLDING PLATE FOR PAPER FOLDING MACHINES.

APPLICATION FILED JUNE 22, I914.

l,173,1 93., Patented Feb. 29,1916.

2 S HEETS SHEET I.

attozvwag R. E. KIMBALL.

FOLDING PLATE FOR PAPER FOLDING MACHINES.

APPLICATION FILED JUNE 22. m4.

1,173,193. Patented Feb. 29,1916.

2 SHEETSSHEET 2- Fig.1.

luoeuto't- Wi lwwooeo "and has for its object theprovislon of a n ears an curren- ROBERT E. KIMBALL, OF CLEVELAND, OHIO, ASSIGNOR. TO THE CLEVELAND FOLDING MACHINE COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

FOLDING-PLATE ronrArER-romme MACHINES.

To all whom it may concern:

Be itknown thatI, ROBERT E. KiiwBALL,

State of-Ohio,.have invented certain new and useful lmprovements in Folding-Plates for Paper-Folding 'Machi-nes, of which the following is a specification.

My invention relates to improvements in folding vplates for paper-folding machines,

a folding plate which avoids certain imperfections present in prior constructions.

mon useis shown and described in Letters respectively comprisetwo spaced grids, be, tween which the paper is passed by co-actling buckling rolls, and checked by an adjustable stop, before being passed between the folding or creasing rolls. So far as I am advised, all suchfolding plates have hitherto been constructed with bars 'or grlds extending parallel with the line of travel of the paper, and the sides of the frame of the folding plate. It has been found in practice that the corneredges of the folded sheet not infrequently st'rikeor catch upon these grids, as the sheet is passed into the folding plate; particularly with paper which has sufi'icient 'body to furnish a tendency to spring or open at the fold, or whenever the corners are bent out of the plane of the sheet. Accordingly, I have devised certain improvements in folding plates, which will overcome this objection and permit the sheet to travel into and out of said plates without catching or striking edgewise against the ribs or bars thereof, to avoid deflecting the paper from its course.

- Briefly stated, my. improvement consists in positioning the ribs or bars ofthe folding plate at an angle with the line of travel of the paper therein, and preferably positioning the same divergently at either side of the plate. v

My improvements will be better appreciated by making reference to the accompanying sheet of drawings, wherein Figure 1 is a plan View of one member of the folding plate constructed in accordance with my invention. Fig. 2 is a side view of the assembled folding plate, and Fig. 3

is a fragmentary cross-sectional view Specification of ll'ietters Patent.

Patented net. as, rare.

Application filed June 22, 1914. Serial No. 846,465.

Throughout the several figures of the v drawing, I have employed the same character of reference to indicate similar parts The folding plate comprises upper and".

lower grids a, b, which, in practice, may respec tively be formed of cast iron and brass castings. These grids are spaced apart sufficiently to permit the-ready passage of the paper therebetween, and one or more ad justable stops 0 may be provided for secur- A type of. folding plate which is in coming the'buckling of the paper betweenthe rolls, at the proper point; one of which'rol'ls bars andribs e, which are T shaped in crosssection, as shown in Fig. 3, extend longitudinally of the frame, and theraised or b aring surfaces of said ribs are all inclined to the left, at a small angle with the vertical, as shown in the plan view. The right hand rib f and guiding edge of the frame 9, hovwever, are correspondingly 1ncl1ned at a dlver- 90 gent angle to the right.

By means of dotted lines, a sheet of paper it is indicated in the position of entering the folding frame, and its corners are seen respectively to register with. the rib f at the guiding edge, and one of the ribs 6, intermediately positioned in the frame. By means of the lines 2' composed of dots and dashes, the position of the sheet within the frame is indicated at its point of engagement with the stop, just before the buckling of the paper occurs to force itspassage between the rolls. The corner edges ofthe sheet in the last position, are free from both of the ribs, by reason of the fact that said ribs are re-. spectively divergent from the line of travel ofthe paper. Accordingly, there is no possibility for the edges of the paper to strike against, and be deflected by the ribs of the upper lower members of said folding plate, by reason of thefact that the bars 1 are similarly positioned at angles with the line of travel of the paper.- Thus it is seen that the corner edges of the paper are constantly moving away from the inclined ribs, while the paper is entered Within the folding plate, and'the sheet passes unimpededagainst the stop in any position of adjustment.' a

From the foregoing, it will be appreciated that my'improvements contemplate the con-.

struction and-positioning of the ribs forming thebearing surfaces of a folding plate, so that they are diagonal to the line of travel of thepaper. Preferably, the guiding edge of the folding plate and one or more of the adjacent ribs, as desired, are diagonally positioned divergently from the remaining ribs or bars. Such divergent positioning of I these ribs may be secured by a corresponding disposition of the entire folding plate, but this arrangement is not as desirable as the one specifically shown and described.

Having now described the preferred form of my invention, I claim as new and desire .to secure by Letters Patent the following chines, the combination of spaced upper and 1. In a folding plate for paper-folding machines, the combination of spaced upper and lower members; one of which comprises a grid having its ribs or bars diagonally positioned with respect to. the normal line of travel of the paper within the folding plate, substantially as set forth.

2. In a folding plate for folding malower grids; the said grids having longitudinally positioned ribs or bars disposed angularly with respect to the normal line of travel of the paper within the folding plate, substantially as set forth.

- 3. In a folding plate for paper-folding machines, the combination of spaced upper and lower members; one of said members bars diagonally positioned with respect to the normal line of travel of the paper yvlthin the foldingplate, and divergent from the guiding edge of said folding plate, substantially as set forth.

5.- In a folding-plate for paper-folding ,machines, the combination of spaced upper and lower members of said plate; one of said members comprising a gazid'ha'ving ribs or bearings'urfaces approximately T-shaped in cross-section and positioned diagonally 'with respect to the normal line of travel of the'paper within the folding plate, substantially as set forth.

- 6.' In a folding plate for paper-foldingmachines, the combination of spaced upper and'lower grids; one of said grids having" ribs approximately T-shape'd in cross-section and positioned diagonally with respect to the normal line of travel of the paper within said folding plate, and a guiding edge divergently positioned with respect to said ribs; the ribs of the opposinggrid beingdiagonally positioned to correspond with the opposing ribs of said first mentioned grid, substantially as set forth.

-' "In testimony whereof do now aflix my 's1gnature1n the presence of "two witnesses this eighteenth day of June, AC1), 1914.

' ROBERT E. KIMBALL.

Witnesses:

REUBEN HrroHcocK,

E. H. FOREST. 

